I was not really sure where to ask this question online so I thought that I would try here. I am just looking for some thoughts/advice.
My husband, 38 yrs old, not overweight, exercises regularly. He is not diabetic and does not have high blood pressure. He was diagnosed with a pituitary tumor 15 yrs ago so he gets full blood work every 6 months. Nothing has changed in his diet or his medications. No urinary symptoms. Drinks water all day except for his coffee in the morning.
In August 2015 his lab result showed his Creatinine elevated at 1.46 (range 0.60-1.35). He was taking a lot of Advil at the time and we found out that that could have been the cause so h e ended up going to a Nephrologist in November 2015, I can't remember all the details of the visit but she was pretty sure his elevated creatinine was not CKD. She ordered a 24 hr urine test (creatinine clearance) and it came back normal. The results were a 2.00 (range 0.63-2.50 g/24 h). She said this means his GFR is over 100% and his kidneys were functioning normally. At the time of the urine test his creatinine was a 1.33 (it did lower from the 1.46 in August 2015). My husband is a pretty big guy and she kept blaming his size for the elevated creatinine although he's been bigger than average his entire life, he actually worked out and had more muscle mass when the creatinine was 1.2. but we
felt reassured he was ok.
Then he had his bi-annual bloodwork done for his tumor in Jan. 2016. His creatinine was a 1.22. We were very relieved and were sure it was from all the Advil and he was back to what he was the year prior and before that... a pretty steady 1.2 ish
His recent bi-annual bloodwork 10/27 was just completed and his creatinine is back up to 1.39.
What would cause this increase again? Nothing has changed. I've read all about eating too much protein, dehydration, high blood pressure but again there's been no change in anything.
Any advice would be appreciated. I will be calling the Nephrologist tomorrow.